@article{SF_1980__20_134402,
     author = {W. Stepp},
     title = {Topological semilattices with enough closed subsemilattices to separate points.},
     journal = {Semigroup forum},
     pages = {49--54},
     publisher = {mathdoc},
     volume = {20},
     year = {1980},
     zbl = {0435.22005},
     url = {http://geodesic.mathdoc.fr/item/SF_1980__20_134402/}
}